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Title: Seal assembly with anti-rotation pin for high pressure supercritical fluids

Patent ·
OSTI ID:1150018

A seal assembly for sealing a machine with a first chamber and a second chamber is provided. A rotating shaft extends through the first and second chambers, and rotates therein. The seal assembly has a seal housing, a seal ring and a seal pin. The seal housing is positionable in the machine housing. The seal housing has a seal pocket extending into a fluid side thereof, and a housing receptacle extending into an inner diameter thereof at the seal pocket. The seal ring is positionable in the seal pocket of the seal housing for forming a seal therewith. The seal ring has a ring receptacle extending into an outer diameter thereof. The ring receptacle is positionable adjacent to the housing receptacle for defining a pin hole therebetween. The seal pin is loosely positionable in the pin hole whereby movement about the seal ring is accommodated while preventing rotation thereof.

Research Organization:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC04-94AL85000
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Number(s):
8,794,634
Application Number:
12/882,492
OSTI ID:
1150018
Resource Relation:
Patent File Date: 2010 Sep 15
Country of Publication:
United States
Language:
English

References (12)

Shaft sealing device for a butterfly valve patent September 1976
Seal-off mechanism for rotating turbine shaft patent February 1988
Floating seal arrangement patent May 1991
Labyrinth seal system patent July 1991
Balanced floating labyrinth seal patent April 1995
Turbine interfitting packing with cam adjustment patent January 1996
Floating labyrinth seal including metal band with carbon ring engaging surface patent June 1996
Rotary seal and/or bearing patent April 2001
Spring-backed abradable seal for turbomachinery patent April 2003
High-pressure film-riding seals for rotating shafts patent February 2004
Integrated labyrinth and carbon seal patent February 2007
A Fluid Mechanics Approach to the Labyrinth Seal Leakage Problem journal April 1961

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